synfig-studio/trunk/src/gtkmm/state_bline.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file state_bline.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  11 **      This package is free software; you can redistribute it and/or
  12 **      modify it under the terms of the GNU General Public License as
  13 **      published by the Free Software Foundation; either version 2 of
  14 **      the License, or (at your option) any later version.
  15 **
  16 **      This package is distributed in the hope that it will be useful,
  17 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19 **      General Public License for more details.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include <gtkmm/dialog.h>
  34 #include <gtkmm/entry.h>
  35
  36 #include <synfig/valuenode_dynamiclist.h>
  37
  38 #include "state_bline.h"
  39 #include "canvasview.h"
  40 #include "workarea.h"
  41 #include "app.h"
  42 #include <synfig/valuenode_bline.h>
  43 #include <ETL/hermite>
  44 #include <ETL/calculus>
  45 #include <utility>
  46 #include "event_mouse.h"
  47 #include "event_layerclick.h"
  48 #include "toolbox.h"
  49 #include "dialog_tooloptions.h"
  50 #include <gtkmm/spinbutton.h>
  51 #include <synfig/transform.h>
  52 #include <synfigapp/main.h>
  53
  54 #include "general.h"
  55
  56 #endif
  57
  58 /* === U S I N G =========================================================== */
  59
  60 using namespace std;
  61 using namespace etl;
  62 using namespace synfig;
  63 using namespace studio;
  64
  65 /* === M A C R O S ========================================================= */
  66
  67 // if defined, show the first duck as green while drawing
  68 #define DISTINGUISH_FIRST_DUCK
  69
  70 /* === G L O B A L S ======================================================= */
  71
  72 StateBLine studio::state_bline;
  73
  74 /* === C L A S S E S & S T R U C T S ======================================= */
  75
  76 class studio::StateBLine_Context : public sigc::trackable
  77 {
  78         etl::handle<CanvasView> canvas_view_;
  79         CanvasView::IsWorking is_working;
  80
  81         bool prev_table_status;
  82         bool loop_;
  83         bool prev_workarea_layer_status_;
  84
  85         int depth;
  86         Canvas::Handle canvas;
  87
  88         Gtk::Menu menu;
  89
  90         Duckmatic::Push duckmatic_push;
  91
  92         etl::handle<Duck> curr_duck;
  93
  94         etl::handle<Duck> next_duck;
  95
  96         std::list<synfig::ValueNode_Const::Handle> bline_point_list;
  97         synfigapp::Settings& settings;
  98
  99         bool on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 100         bool on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 101         bool on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node);
 102
 103
 104         void popup_handle_menu(synfig::ValueNode_Const::Handle value_node);
 105         void popup_vertex_menu(synfig::ValueNode_Const::Handle value_node);
 106         void popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node);
 107
 108         void bline_detach_handle(synfig::ValueNode_Const::Handle value_node);
 109         void bline_attach_handle(synfig::ValueNode_Const::Handle value_node);
 110         void bline_delete_vertex(synfig::ValueNode_Const::Handle value_node);
 111         void bline_insert_vertex(synfig::ValueNode_Const::Handle value_node,float origin=0.5);
 112         void loop_bline();
 113         void unloop_bline();
 114
 115         void refresh_ducks(bool x=true);
 116
 117         Gtk::Table options_table;
 118         Gtk::Entry entry_id;
 119         Gtk::CheckButton checkbutton_layer_region;
 120         Gtk::CheckButton checkbutton_layer_outline;
 121         Gtk::CheckButton checkbutton_layer_curve_gradient;
 122         Gtk::CheckButton checkbutton_layer_plant;
 123         Gtk::CheckButton checkbutton_layer_link_origins;
 124         Gtk::CheckButton checkbutton_auto_export;
 125         Gtk::Button button_make;
 126         Gtk::Button button_clear;
 127         Gtk::Adjustment  adj_feather;
 128         Gtk::SpinButton  spin_feather;
 129
 130
 131
 132 public:
 133
 134         int layers_to_create()const
 135         {
 136                 return
 137                         get_layer_region_flag() +
 138                         get_layer_outline_flag() +
 139                         get_layer_curve_gradient_flag() +
 140                         get_layer_plant_flag();
 141         }
 142
 143         void sanity_check()
 144         {
 145                 if(layers_to_create()==0)
 146                         set_layer_region_flag(true);
 147         }
 148
 149         bool get_auto_export_flag()const { return checkbutton_auto_export.get_active(); }
 150         void set_auto_export_flag(bool x) { return checkbutton_auto_export.set_active(x); }
 151
 152         bool get_layer_region_flag()const { return checkbutton_layer_region.get_active(); }
 153         void set_layer_region_flag(bool x) { return checkbutton_layer_region.set_active(x); }
 154
 155         bool get_layer_outline_flag()const { return checkbutton_layer_outline.get_active(); }
 156         void set_layer_outline_flag(bool x) { return checkbutton_layer_outline.set_active(x); }
 157
 158         bool get_layer_curve_gradient_flag()const { return checkbutton_layer_curve_gradient.get_active(); }
 159         void set_layer_curve_gradient_flag(bool x) { return checkbutton_layer_curve_gradient.set_active(x); }
 160
 161         bool get_layer_plant_flag()const { return checkbutton_layer_plant.get_active(); }
 162         void set_layer_plant_flag(bool x) { return checkbutton_layer_plant.set_active(x); }
 163
 164         bool get_layer_link_origins_flag()const { return checkbutton_layer_link_origins.get_active(); }
 165         void set_layer_link_origins_flag(bool x) { return checkbutton_layer_link_origins.set_active(x); }
 166
 167         Real get_feather() const { return adj_feather.get_value(); }
 168         void set_feather(Real x) { return adj_feather.set_value(x); }
 169         synfig::String get_id()const { return entry_id.get_text(); }
 170         void set_id(const synfig::String& x) { return entry_id.set_text(x); }
 171
 172         Smach::event_result event_stop_handler(const Smach::event& x);
 173
 174         Smach::event_result event_refresh_handler(const Smach::event& x);
 175
 176         Smach::event_result event_mouse_click_handler(const Smach::event& x);
 177         Smach::event_result event_mouse_release_handler(const Smach::event& x);
 178         Smach::event_result event_mouse_motion_handler(const Smach::event& x);
 179         Smach::event_result event_refresh_tool_options(const Smach::event& x);
 180
 181         Smach::event_result event_hijack(const Smach::event& /*x*/) { return Smach::RESULT_ACCEPT; }
 182
 183         void refresh_tool_options();
 184
 185         StateBLine_Context(CanvasView* canvas_view);
 186
 187         ~StateBLine_Context();
 188
 189         const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
 190         etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
 191         synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
 192         WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
 193         const synfig::TransformStack& get_transform_stack()const { return canvas_view_->get_curr_transform_stack(); }
 194
 195         void load_settings();
 196         void save_settings();
 197         void reset();
 198         void increment_id();
 199         //void on_user_click(synfig::Point point);
 200
 201         bool run_();
 202         bool run();
 203
 204         bool egress_on_selection_change;
 205         Smach::event_result event_layer_selection_changed_handler(const Smach::event& /*x*/)
 206         {
 207                 if(egress_on_selection_change)
 208                         throw Smach::egress_exception();
 209                 return Smach::RESULT_OK;
 210         }
 211
 212 };      // END of class StateBLine_Context
 213
 214
 215 /* === M E T H O D S ======================================================= */
 216
 217 StateBLine::StateBLine():
 218         Smach::state<StateBLine_Context>("bline")
 219 {
 220         insert(event_def(EVENT_LAYER_SELECTION_CHANGED,         &StateBLine_Context::event_layer_selection_changed_handler));
 221         insert(event_def(EVENT_STOP,                                            &StateBLine_Context::event_stop_handler));
 222         insert(event_def(EVENT_REFRESH,                                         &StateBLine_Context::event_refresh_handler));
 223         insert(event_def(EVENT_REFRESH_DUCKS,                           &StateBLine_Context::event_hijack));
 224         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,      &StateBLine_Context::event_mouse_click_handler));
 225         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,        &StateBLine_Context::event_mouse_release_handler));
 226         insert(event_def(EVENT_WORKAREA_MOUSE_MOTION,           &StateBLine_Context::event_mouse_motion_handler));
 227         insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,      &StateBLine_Context::event_mouse_motion_handler));
 228         insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,            &StateBLine_Context::event_refresh_tool_options));
 229 }
 230
 231 StateBLine::~StateBLine()
 232 {
 233 }
 234
 235 void
 236 StateBLine_Context::load_settings()
 237 {
 238         String value;
 239
 240         if(settings.get_value("bline.layer_region",value) && value=="0")
 241                 set_layer_region_flag(false);
 242         else
 243                 set_layer_region_flag(true);
 244
 245         if(settings.get_value("bline.layer_outline",value) && value=="0")
 246                 set_layer_outline_flag(false);
 247         else
 248                 set_layer_outline_flag(true);
 249
 250         if(settings.get_value("bline.layer_curve_gradient",value) && value=="1")
 251                 set_layer_curve_gradient_flag(true);
 252         else
 253                 set_layer_curve_gradient_flag(false);
 254
 255         if(settings.get_value("bline.layer_plant",value) && value=="1")
 256                 set_layer_plant_flag(true);
 257         else
 258                 set_layer_plant_flag(false);
 259
 260         if(settings.get_value("bline.layer_link_origins",value) && value=="0")
 261                 set_layer_link_origins_flag(false);
 262         else
 263                 set_layer_link_origins_flag(true);
 264
 265         if(settings.get_value("bline.auto_export",value) && value=="1")
 266                 set_auto_export_flag(true);
 267         else
 268                 set_auto_export_flag(false);
 269
 270         if(settings.get_value("bline.id",value))
 271                 set_id(value);
 272         else
 273                 set_id("NewBLine");
 274
 275         if(settings.get_value("bline.feather",value))
 276         {
 277                 Real n = atof(value.c_str());
 278                 set_feather(n);
 279         }
 280
 281         sanity_check();
 282 }
 283
 284 void
 285 StateBLine_Context::save_settings()
 286 {
 287         sanity_check();
 288         settings.set_value("bline.layer_outline",get_layer_outline_flag()?"1":"0");
 289         settings.set_value("bline.layer_region",get_layer_region_flag()?"1":"0");
 290         settings.set_value("bline.layer_curve_gradient",get_layer_curve_gradient_flag()?"1":"0");
 291         settings.set_value("bline.layer_plant",get_layer_plant_flag()?"1":"0");
 292         settings.set_value("bline.layer_link_origins",get_layer_link_origins_flag()?"1":"0");
 293         settings.set_value("bline.auto_export",get_auto_export_flag()?"1":"0");
 294         settings.set_value("bline.id",get_id().c_str());
 295         settings.set_value("bline.feather",strprintf("%f",get_feather()));
 296 }
 297
 298 void
 299 StateBLine_Context::reset()
 300 {
 301         loop_=false;
 302         bline_point_list.clear();
 303         refresh_ducks();
 304 }
 305
 306 void
 307 StateBLine_Context::increment_id()
 308 {
 309         String id(get_id());
 310         int number=1;
 311         int digits=0;
 312
 313         if(id.empty())
 314                 id="NewBLine";
 315
 316         // If there is a number
 317         // already at the end of the
 318         // id, then remove it.
 319         if(id[id.size()-1]<='9' && id[id.size()-1]>='0')
 320         {
 321                 // figure out how many digits it is
 322                 for (digits = 0;
 323                          (int)id.size()-1 >= digits && id[id.size()-1-digits] <= '9' && id[id.size()-1-digits] >= '0';
 324                          digits++)
 325                         ;
 326
 327                 String str_number;
 328                 str_number=String(id,id.size()-digits,id.size());
 329                 id=String(id,0,id.size()-digits);
 330                 // synfig::info("---------------- \"%s\"",str_number.c_str());
 331
 332                 number=atoi(str_number.c_str());
 333         }
 334         else
 335         {
 336                 number=1;
 337                 digits=3;
 338         }
 339
 340         number++;
 341
 342         // Add the number back onto the id
 343         {
 344                 const String format(strprintf("%%0%dd",digits));
 345                 id+=strprintf(format.c_str(),number);
 346         }
 347
 348         // Set the ID
 349         set_id(id);
 350 }
 351
 352
 353 StateBLine_Context::StateBLine_Context(CanvasView* canvas_view):
 354         canvas_view_(canvas_view),
 355         is_working(*canvas_view),
 356         loop_(false),
 357         prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks()),
 358         duckmatic_push(get_work_area()),
 359         settings(synfigapp::Main::get_selected_input_device()->settings()),
 360         entry_id(),
 361         checkbutton_layer_region(_("Create Region BLine")),
 362         checkbutton_layer_outline(_("Create Outline BLine")),
 363         checkbutton_layer_curve_gradient(_("Create Curve Gradient BLine")),
 364         checkbutton_layer_plant(_("Create Plant BLine")),
 365         checkbutton_layer_link_origins(_("Link Origins")),
 366         checkbutton_auto_export(_("Auto Export")),
 367         button_make(_("Make")),
 368         button_clear(_("Clear")),
 369         adj_feather(0,0,10000,0.01,0.1),
 370         spin_feather(adj_feather,0.01,4)
 371 {
 372         depth=-1;
 373         egress_on_selection_change=true;
 374         load_settings();
 375
 376         // Set up the tool options dialog
 377         options_table.attach(*manage(new Gtk::Label(_("BLine Tool"))),  0, 2,  0,  1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 378         options_table.attach(entry_id,                                                                  0, 2,  1,  2, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 379         options_table.attach(checkbutton_layer_outline,                                 0, 2,  2,  3, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 380         options_table.attach(checkbutton_layer_region,                                  0, 2,  3,  4, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 381         options_table.attach(checkbutton_layer_plant,                                   0, 2,  4,  5, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 382         options_table.attach(checkbutton_layer_curve_gradient,                  0, 2,  5,  6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 383         options_table.attach(checkbutton_layer_link_origins,                    0, 2,  6,  7, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 384         options_table.attach(checkbutton_auto_export,                                   0, 2,  7,  8, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 385         options_table.attach(*manage(new Gtk::Label(_("Feather"))),     0, 1, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 386         options_table.attach(spin_feather,                                                              1, 2, 10, 11, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 387         //options_table.attach(button_make, 0, 2, 5, 6, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
 388         //button_make.signal_pressed().connect(sigc::mem_fun(*this,&StateBLine_Context::run));
 389         options_table.show_all();
 390         refresh_tool_options();
 391         App::dialog_tool_options->present();
 392
 393         // Turn off layer clicking
 394         get_work_area()->set_allow_layer_clicks(false);
 395
 396         // clear out the ducks
 397         get_work_area()->clear_ducks();
 398
 399         // Refresh the work area
 400         get_work_area()->queue_draw();
 401
 402         // Hide the tables if they are showing
 403         prev_table_status=get_canvas_view()->tables_are_visible();
 404         if(prev_table_status)get_canvas_view()->hide_tables();
 405
 406         // Disable the time bar
 407         get_canvas_view()->set_sensitive_timebar(false);
 408
 409         // Connect a signal
 410         //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateBLine_Context::on_user_click));
 411         get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
 412
 413         App::toolbox->refresh();
 414 }
 415
 416 void
 417 StateBLine_Context::refresh_tool_options()
 418 {
 419         App::dialog_tool_options->clear();
 420         App::dialog_tool_options->set_widget(options_table);
 421         App::dialog_tool_options->set_local_name(_("BLine Tool"));
 422         App::dialog_tool_options->set_name("bline");
 423
 424         App::dialog_tool_options->add_button(
 425                 Gtk::StockID("gtk-execute"),
 426                 _("Make BLine and/or Region")
 427         )->signal_clicked().connect(
 428                 sigc::hide_return(sigc::mem_fun(
 429                         *this,
 430                         &StateBLine_Context::run
 431                 ))
 432         );
 433
 434         App::dialog_tool_options->add_button(
 435                 Gtk::StockID("gtk-clear"),
 436                 _("Clear current BLine")
 437         )->signal_clicked().connect(
 438                 sigc::mem_fun(
 439                         *this,
 440                         &StateBLine_Context::reset
 441                 )
 442         );
 443 }
 444
 445 Smach::event_result
 446 StateBLine_Context::event_refresh_tool_options(const Smach::event& /*x*/)
 447 {
 448         refresh_tool_options();
 449         return Smach::RESULT_ACCEPT;
 450 }
 451
 452 StateBLine_Context::~StateBLine_Context()
 453 {
 454         run();
 455
 456         save_settings();
 457         App::dialog_tool_options->clear();
 458
 459         get_canvas_view()->work_area->reset_cursor();
 460
 461         // Restore layer clicking
 462         get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
 463
 464         // Enable the time bar
 465         get_canvas_view()->set_sensitive_timebar(true);
 466
 467         // Bring back the tables if they were out before
 468         if(prev_table_status)get_canvas_view()->show_tables();
 469
 470 //      get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
 471
 472         // Refresh the work area
 473         get_work_area()->queue_draw();
 474
 475         App::toolbox->refresh();
 476 }
 477
 478 Smach::event_result
 479 StateBLine_Context::event_stop_handler(const Smach::event& /*x*/)
 480 {
 481 //      synfig::info("STATE RotoBLine: Received Stop Event");
 482 //      run();
 483         reset();
 484 //      throw Smach::egress_exception();
 485 //      get_canvas_view()->get_smach().pop_state();
 486         return Smach::RESULT_ACCEPT;
 487 }
 488
 489 Smach::event_result
 490 StateBLine_Context::event_refresh_handler(const Smach::event& /*x*/)
 491 {
 492 //      synfig::info("STATE RotoBLine: Received Refresh Event");
 493         refresh_ducks();
 494         return Smach::RESULT_ACCEPT;
 495 }
 496
 497 bool
 498 StateBLine_Context::run()
 499 {
 500         sanity_check();
 501
 502         String err;
 503         bool success(false);
 504         for(int i=5;i>0 && !success;i--)try
 505         {
 506                 success=run_();
 507         }
 508         catch(String s)
 509         {
 510                 err=s;
 511         }
 512         if(!success && !err.empty())
 513         {
 514                 get_canvas_view()->get_ui_interface()->error(err);
 515         }
 516         return success;
 517 }
 518
 519 bool
 520 StateBLine_Context::run_()
 521 {
 522         curr_duck=0;
 523         next_duck=0;
 524
 525         // Now we need to generate it
 526
 527         if(bline_point_list.empty())
 528         {
 529                 return false;
 530         }
 531         if(bline_point_list.size()<2)
 532         {
 533                 //get_canvas_view()->get_ui_interface()->error(_("You need at least two (2) points to create a BLine"));
 534                 return false;
 535         }
 536
 537         do
 538         {
 539
 540                 // Create the action group
 541                 synfigapp::Action::PassiveGrouper group(get_canvas_interface()->get_instance().get(),_("New BLine"));
 542
 543                 std::vector<BLinePoint> new_list;
 544                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
 545                 const synfig::TransformStack& transform(get_transform_stack());
 546
 547                 for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
 548                 {
 549                         BLinePoint bline_point((*iter)->get_value().get(BLinePoint()));
 550                         Point new_vertex(transform.unperform(bline_point.get_vertex()));
 551
 552                         bline_point.set_tangent1(
 553                                 transform.unperform(
 554                                         bline_point.get_tangent1()+bline_point.get_vertex()
 555                                 ) -new_vertex
 556                         );
 557
 558                         bline_point.set_tangent2(
 559                                 transform.unperform(
 560                                         bline_point.get_tangent2()+bline_point.get_vertex()
 561                                 ) -new_vertex
 562                         );
 563
 564                         bline_point.set_vertex(new_vertex);
 565
 566                         new_list.push_back(bline_point);
 567                 }
 568
 569                 ValueNode_BLine::Handle value_node_bline(ValueNode_BLine::create(new_list));
 570                 assert(value_node_bline);
 571
 572                 ValueNode_Const::Handle value_node_origin(ValueNode_Const::create(Vector()));
 573                 assert(value_node_origin);
 574
 575                 // Set the looping flag
 576                 value_node_bline->set_loop(loop_);
 577
 578                 // Add the BLine to the canvas
 579                 if(get_auto_export_flag() && !get_canvas_interface()->add_value_node(value_node_bline,get_id()))
 580                 {
 581                         //get_canvas_view()->get_ui_interface()->error(_("Unable to add value node"));
 582                         group.cancel();
 583                         increment_id();
 584                         throw String(_("Unable to add value node"));
 585                         return false;
 586                 }
 587
 588                 Layer::Handle layer;
 589
 590                 // we are temporarily using the layer to hold something
 591                 layer=get_canvas_view()->get_selection_manager()->get_selected_layer();
 592
 593                 if(layer)
 594                 {
 595                         if(depth<0)
 596                                 depth=layer->get_depth();
 597                         if(!canvas)
 598                                 canvas=layer->get_canvas();
 599                 }
 600                 else
 601                         depth=0;
 602
 603                 if(!canvas)
 604                         canvas=get_canvas_view()->get_canvas();
 605
 606                 value_node_bline->set_member_canvas(canvas);
 607
 608                 synfigapp::SelectionManager::LayerList layer_selection;
 609                 if (!getenv("SYNFIG_TOOLS_CLEAR_SELECTION"))
 610                         layer_selection = get_canvas_view()->get_selection_manager()->get_selected_layers();
 611
 612                 // count how many layers we're going to be creating
 613                 int layers_to_create = this->layers_to_create();
 614
 615                 ///////////////////////////////////////////////////////////////////////////
 616                 //   C U R V E   G R A D I E N T
 617                 ///////////////////////////////////////////////////////////////////////////
 618
 619                 if(get_layer_curve_gradient_flag())
 620                 {
 621                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 622
 623                         Layer::Handle layer(get_canvas_interface()->add_layer_to("curve_gradient",canvas,depth));
 624                         if (!layer)
 625                         {
 626                                 group.cancel();
 627                                 throw String(_("Unable to create layer"));
 628                         }
 629                         layer_selection.push_back(layer);
 630                         layer->set_description(get_id()+_(" Gradient"));
 631                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 632
 633                         {
 634                                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
 635                                 assert(action);
 636
 637                                 action->set_param("canvas",get_canvas());
 638                                 action->set_param("canvas_interface",get_canvas_interface());
 639                                 action->set_param("layer",layer);
 640                                 if(!action->set_param("param",String("bline")))
 641                                         synfig::error("LayerParamConnect didn't like \"param\"");
 642                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 643                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 644
 645                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 646                                 {
 647                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 648                                         group.cancel();
 649                                         throw String(_("Unable to create Gradient layer"));
 650                                         return false;
 651                                 }
 652                         }
 653
 654                         // only link the curve gradient's origin parameter if the option is selected and we're creating more than one layer
 655                         if (get_layer_link_origins_flag() && layers_to_create > 1)
 656                         {
 657                                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
 658                                 assert(action);
 659
 660                                 action->set_param("canvas",get_canvas());
 661                                 action->set_param("canvas_interface",get_canvas_interface());
 662                                 action->set_param("layer",layer);
 663                                 if(!action->set_param("param",String("origin")))
 664                                         synfig::error("LayerParamConnect didn't like \"param\"");
 665                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 666                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 667
 668                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 669                                 {
 670                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 671                                         group.cancel();
 672                                         throw String(_("Unable to create Gradient layer"));
 673                                         return false;
 674                                 }
 675                         }
 676                 }
 677
 678                 ///////////////////////////////////////////////////////////////////////////
 679                 //   P L A N T
 680                 ///////////////////////////////////////////////////////////////////////////
 681
 682                 if(get_layer_plant_flag())
 683                 {
 684                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 685
 686                         Layer::Handle layer(get_canvas_interface()->add_layer_to("plant",canvas,depth));
 687                         if (!layer)
 688                         {
 689                                 group.cancel();
 690                                 throw String(_("Unable to create layer"));
 691                         }
 692                         layer_selection.push_back(layer);
 693                         layer->set_description(get_id()+_(" Plant"));
 694                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 695
 696                         {
 697                                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
 698                                 assert(action);
 699
 700                                 action->set_param("canvas",get_canvas());
 701                                 action->set_param("canvas_interface",get_canvas_interface());
 702                                 action->set_param("layer",layer);
 703                                 if(!action->set_param("param",String("bline")))
 704                                         synfig::error("LayerParamConnect didn't like \"param\"");
 705                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 706                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 707
 708                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 709                                 {
 710                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 711                                         group.cancel();
 712                                         throw String(_("Unable to create Plant layer"));
 713                                         return false;
 714                                 }
 715                         }
 716
 717                         // only link the plant's origin parameter if the option is selected and we're creating more than one layer
 718                         if (get_layer_link_origins_flag() && layers_to_create > 1)
 719                         {
 720                                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
 721                                 assert(action);
 722
 723                                 action->set_param("canvas",get_canvas());
 724                                 action->set_param("canvas_interface",get_canvas_interface());
 725                                 action->set_param("layer",layer);
 726                                 if(!action->set_param("param",String("origin")))
 727                                         synfig::error("LayerParamConnect didn't like \"param\"");
 728                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 729                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 730
 731                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 732                                 {
 733                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 734                                         group.cancel();
 735                                         throw String(_("Unable to create Plant layer"));
 736                                         return false;
 737                                 }
 738                         }
 739                 }
 740
 741                 ///////////////////////////////////////////////////////////////////////////
 742                 //   R E G I O N
 743                 ///////////////////////////////////////////////////////////////////////////
 744
 745                 if(get_layer_region_flag())
 746                 {
 747                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 748
 749                         Layer::Handle layer(get_canvas_interface()->add_layer_to("region",canvas,depth));
 750                         if (!layer)
 751                         {
 752                                 group.cancel();
 753                                 throw String(_("Unable to create layer"));
 754                         }
 755                         layer_selection.push_back(layer);
 756                         layer->set_description(get_id()+_(" Region"));
 757                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 758
 759                         if(get_feather())
 760                         {
 761                                 layer->set_param("feather",get_feather());
 762                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 763                         }
 764
 765                         // I don't know if it's safe to reuse the same LayerParamConnect action, so I'm
 766                         // using 2 separate ones.
 767                         {
 768                                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
 769                                 assert(action);
 770
 771                                 action->set_param("canvas",get_canvas());
 772                                 action->set_param("canvas_interface",get_canvas_interface());
 773                                 action->set_param("layer",layer);
 774                                 if(!action->set_param("param",String("bline")))
 775                                         synfig::error("LayerParamConnect didn't like \"param\"");
 776                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 777                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 778
 779                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 780                                 {
 781                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 782                                         group.cancel();
 783                                         throw String(_("Unable to create Region layer"));
 784                                         return false;
 785                                 }
 786                         }
 787
 788                         // only link the region's origin parameter if the option is selected and we're creating more than one layer
 789                         if (get_layer_link_origins_flag() && layers_to_create > 1)
 790                         {
 791                                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
 792                                 assert(action);
 793
 794                                 action->set_param("canvas",get_canvas());
 795                                 action->set_param("canvas_interface",get_canvas_interface());
 796                                 action->set_param("layer",layer);
 797                                 if(!action->set_param("param",String("origin")))
 798                                         synfig::error("LayerParamConnect didn't like \"param\"");
 799                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 800                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 801
 802                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 803                                 {
 804                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create Region layer"));
 805                                         group.cancel();
 806                                         throw String(_("Unable to create Region layer"));
 807                                         return false;
 808                                 }
 809                         }
 810                 }
 811
 812                 ///////////////////////////////////////////////////////////////////////////
 813                 //   O U T L I N E
 814                 ///////////////////////////////////////////////////////////////////////////
 815
 816                 if(get_layer_outline_flag())
 817                 {
 818                         synfigapp::PushMode push_mode(get_canvas_interface(),synfigapp::MODE_NORMAL);
 819
 820                         Layer::Handle layer(get_canvas_interface()->add_layer_to("outline",canvas,depth));
 821                         if (!layer)
 822                         {
 823                                 group.cancel();
 824                                 throw String(_("Unable to create layer"));
 825                         }
 826                         layer_selection.push_back(layer);
 827                         layer->set_description(get_id()+_(" Outline"));
 828                         get_canvas_interface()->signal_layer_new_description()(layer,layer->get_description());
 829                         if(get_feather())
 830                         {
 831                                 layer->set_param("feather",get_feather());
 832                                 get_canvas_interface()->signal_layer_param_changed()(layer,"feather");
 833                         }
 834
 835                         {
 836                                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
 837                                 assert(action);
 838
 839                                 action->set_param("canvas",get_canvas());
 840                                 action->set_param("canvas_interface",get_canvas_interface());
 841                                 action->set_param("layer",layer);
 842                                 if(!action->set_param("param",String("bline")))
 843                                         synfig::error("LayerParamConnect didn't like \"param\"");
 844                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_bline)))
 845                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 846
 847                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 848                                 {
 849                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 850                                         group.cancel();
 851                                         throw String(_("Unable to create Outline layer"));
 852                                         return false;
 853                                 }
 854                         }
 855
 856                         // only link the outline's origin parameter if the option is selected and we're creating more than one layer
 857                         if (get_layer_link_origins_flag() && layers_to_create > 1)
 858                         {
 859                                 synfigapp::Action::Handle action(synfigapp::Action::create("LayerParamConnect"));
 860                                 assert(action);
 861
 862                                 action->set_param("canvas",get_canvas());
 863                                 action->set_param("canvas_interface",get_canvas_interface());
 864                                 action->set_param("layer",layer);
 865                                 if(!action->set_param("param",String("origin")))
 866                                         synfig::error("LayerParamConnect didn't like \"param\"");
 867                                 if(!action->set_param("value_node",ValueNode::Handle(value_node_origin)))
 868                                         synfig::error("LayerParamConnect didn't like \"value_node\"");
 869
 870                                 if(!get_canvas_interface()->get_instance()->perform_action(action))
 871                                 {
 872                                         //get_canvas_view()->get_ui_interface()->error(_("Unable to create BLine layer"));
 873                                         group.cancel();
 874                                         throw String(_("Unable to create Outline layer"));
 875                                         return false;
 876                                 }
 877                         }
 878                 }
 879
 880                 egress_on_selection_change=false;
 881                 get_canvas_interface()->get_selection_manager()->clear_selected_layers();
 882                 get_canvas_interface()->get_selection_manager()->set_selected_layers(layer_selection);
 883                 egress_on_selection_change=true;
 884
 885                 //if(finish_bline_dialog.get_region_flag() || finish_bline_dialog.get_bline_flag())
 886                 //      get_canvas_interface()->signal_dirty_preview()();
 887
 888         } while(0);
 889
 890         reset();
 891         increment_id();
 892         return true;
 893 }
 894
 895 Smach::event_result
 896 StateBLine_Context::event_mouse_motion_handler(const Smach::event& x)
 897 {
 898         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 899
 900         if(curr_duck)
 901         {
 902                 //synfig::info("Moved Duck");
 903                 Point p(get_work_area()->snap_point_to_grid(event.pos));
 904                 curr_duck->set_trans_point(p);
 905                 if(next_duck)
 906                         next_duck->set_trans_point(p);
 907                 get_work_area()->queue_draw();
 908                 return Smach::RESULT_ACCEPT;
 909         }
 910
 911         return Smach::RESULT_OK;
 912 }
 913
 914 Smach::event_result
 915 StateBLine_Context::event_mouse_release_handler(const Smach::event& /*x*/)
 916 {
 917         if(curr_duck)
 918         {
 919                 //synfig::info("Released current duck");
 920                 curr_duck->signal_edited()(curr_duck->get_point());
 921                 if(next_duck)
 922                 {
 923                         //synfig::info("grabbing next duck");
 924                         curr_duck=next_duck;
 925                         next_duck=0;
 926                 }
 927                 return Smach::RESULT_ACCEPT;
 928         }
 929         return Smach::RESULT_OK;
 930 }
 931
 932 Smach::event_result
 933 StateBLine_Context::event_mouse_click_handler(const Smach::event& x)
 934 {
 935         // synfig::info("STATE BLINE: Received mouse button down Event");
 936         const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
 937         switch(event.button)
 938         {
 939         case BUTTON_LEFT:
 940                 {
 941                         // If we are already looped up, then don't try to add anything else
 942                         if(loop_)
 943                                 return Smach::RESULT_OK;
 944
 945                         BLinePoint bline_point;
 946
 947                         bline_point.set_vertex(get_work_area()->snap_point_to_grid(event.pos));
 948                         //bline_point.set_width(synfigapp::Main::get_bline_width());
 949                         bline_point.set_width(1.0f);
 950                         bline_point.set_origin(0.5f);
 951                         bline_point.set_split_tangent_flag(false);
 952                         bline_point.set_tangent1(Vector(0,0));
 953
 954                         // set the tangent
 955                         /*
 956                         if(bline_point_list.empty())
 957                         {
 958                                 bline_point.set_tangent1(Vector(1,1));
 959                         }
 960                         else
 961                         {
 962                                 const Vector t(event.pos-bline_point_list.back()->get_value().get(BLinePoint()).get_vertex());
 963                                 bline_point.set_tangent1(t);
 964                         }
 965
 966                         if(bline_point_list.size()>1)
 967                         {
 968                                 std::list<synfig::ValueNode_Const::Handle>::iterator iter;
 969                                 iter=bline_point_list.end();
 970                                 iter--;iter--;
 971                                 BLinePoint prev(bline_point_list.back()->get_value().get(BLinePoint()));
 972                                 prev.set_tangent1(event.pos-(*iter)->get_value().get(BLinePoint()).get_vertex());
 973                                 bline_point_list.back()->set_value(prev);
 974                         };
 975                         */
 976
 977                         bline_point_list.push_back(ValueNode_Const::create(bline_point));
 978
 979                         refresh_ducks();
 980                         return Smach::RESULT_ACCEPT;
 981                 }
 982
 983         default:
 984                 return Smach::RESULT_OK;
 985         }
 986 }
 987
 988 void
 989 StateBLine_Context::refresh_ducks(bool button_down)
 990 {
 991         get_work_area()->clear_ducks();
 992         get_work_area()->queue_draw();
 993
 994         if(bline_point_list.empty())
 995                 return;
 996
 997         list<ValueNode_Const::Handle>::iterator iter;
 998
 999         handle<WorkArea::Bezier> bezier;
1000         handle<WorkArea::Duck> duck,tduck;
1001         BLinePoint bline_point;
1002
1003         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1004         {
1005                 ValueNode_Const::Handle value_node(*iter);
1006                 bline_point=(value_node->get_value().get(BLinePoint()));
1007                 assert(value_node);
1008
1009
1010                 // First add the duck associated with this vertex
1011                 duck=new WorkArea::Duck(bline_point.get_vertex());
1012                 duck->set_editable(true);
1013 #ifdef DISTINGUISH_FIRST_DUCK
1014                 if (iter!=bline_point_list.begin())
1015                         duck->set_type(Duck::TYPE_VERTEX);
1016 #else
1017                 duck->set_type(Duck::TYPE_VERTEX);
1018 #endif
1019                 duck->set_name(strprintf("%x-vertex",value_node.get()));
1020                 duck->signal_edited().connect(
1021                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),value_node)
1022                 );
1023                 duck->signal_user_click(2).connect(
1024                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),value_node)
1025                 );
1026                 duck->set_guid(value_node->get_guid()^synfig::GUID::hasher(0));
1027
1028                 get_work_area()->add_duck(duck);
1029
1030                 // Add the tangent1 duck
1031                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1032                 tduck->set_editable(true);
1033                 tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1034                 tduck->set_origin(duck);
1035                 tduck->set_scalar(-0.33333333333333333);
1036                 tduck->set_tangent(true);
1037                 tduck->set_guid(value_node->get_guid()^synfig::GUID::hasher(3));
1038                 tduck->signal_edited().connect(
1039                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1040                 );
1041                 tduck->signal_user_click(2).connect(
1042                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1043                 );
1044
1045                 // See if we need to add that duck to the previous bezier
1046                 if(bezier)
1047                 {
1048                         get_work_area()->add_duck(tduck);
1049                         bezier->p2=duck;
1050                         bezier->c2=tduck;
1051
1052                         bezier->signal_user_click(2).connect(
1053                                 sigc::bind(
1054                                         sigc::mem_fun(
1055                                                 *this,
1056                                                 &studio::StateBLine_Context::popup_bezier_menu
1057                                         ),
1058                                         value_node
1059                                 )
1060                         );
1061
1062                         //get_work_area()->add_duck(bezier->c1);
1063                         //get_work_area()->add_duck(bezier->c2);
1064                         get_work_area()->add_bezier(bezier);
1065
1066                         bezier=0;
1067                 }
1068
1069                 // Now we see if we need to create a bezier
1070                 list<ValueNode_Const::Handle>::iterator next(iter);
1071                 next++;
1072
1073                 // If our next iterator is the end, then we don't need
1074                 // to add a bezier.
1075                 //if(next==bline_point_list.end() && !loop_)
1076                 //      continue;
1077
1078                 bezier=new WorkArea::Bezier();
1079
1080                 // Add the tangent2 duck
1081                 tduck=new WorkArea::Duck(bline_point.get_tangent2());
1082                 tduck->set_editable(true);
1083                 tduck->set_origin(duck);
1084                 tduck->set_scalar(0.33333333333333333);
1085                 tduck->set_tangent(true);
1086                 if(bline_point.get_split_tangent_flag())
1087                 {
1088                         tduck->set_name(strprintf("%x-tangent2",value_node.get()));
1089                         tduck->signal_edited().connect(
1090                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent2_change),value_node)
1091                         );
1092                 }
1093                 else
1094                 {
1095                         tduck->set_name(strprintf("%x-tangent1",value_node.get()));
1096                         tduck->signal_edited().connect(
1097                                 sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),value_node)
1098                         );
1099                 }
1100                 tduck->set_guid(value_node->get_guid()^synfig::GUID::hasher(4));
1101                 tduck->signal_user_click(2).connect(
1102                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),value_node)
1103                 );
1104
1105                 // Setup the next bezier
1106                 bezier->p1=duck;
1107                 bezier->c1=tduck;
1108
1109                 get_work_area()->add_duck(tduck);
1110                 curr_duck=tduck;
1111         }
1112
1113         // Add the loop, if requested
1114         if(bezier && loop_)
1115         {
1116                 curr_duck=0;
1117                 BLinePoint bline_point(bline_point_list.front()->get_value().get(BLinePoint()));
1118
1119                 duck=new WorkArea::Duck(bline_point.get_vertex());
1120                 duck->set_editable(true);
1121 #ifndef DISTINGUISH_FIRST_DUCK
1122                 duck->set_type(Duck::TYPE_VERTEX);
1123 #endif
1124                 duck->set_name(strprintf("%x-vertex",bline_point_list.front().get()));
1125                 duck->signal_edited().connect(
1126                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_vertex_change),bline_point_list.front())
1127                 );
1128                 duck->signal_user_click(2).connect(
1129                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_vertex_menu),bline_point_list.front())
1130                 );
1131                 get_work_area()->add_duck(duck);
1132
1133                 // Add the tangent1 duck
1134                 tduck=new WorkArea::Duck(bline_point.get_tangent1());
1135                 tduck->set_editable(true);
1136                 tduck->set_name(strprintf("%x-tangent1",bline_point_list.front().get()));
1137                 tduck->set_origin(duck);
1138                 tduck->set_scalar(-0.33333333333333333);
1139                 tduck->set_tangent(true);
1140                 tduck->signal_edited().connect(
1141                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::on_tangent1_change),bline_point_list.front())
1142                 );
1143                 tduck->signal_user_click(2).connect(
1144                         sigc::bind(sigc::mem_fun(*this,&studio::StateBLine_Context::popup_handle_menu),bline_point_list.front())
1145                 );
1146                 get_work_area()->add_duck(tduck);
1147
1148                 bezier->p2=duck;
1149                 bezier->c2=tduck;
1150
1151                 bezier->signal_user_click(2).connect(
1152                         sigc::bind(
1153                                 sigc::mem_fun(
1154                                         *this,
1155                                         &studio::StateBLine_Context::popup_bezier_menu
1156                                 ),
1157                                 bline_point_list.front()
1158                         )
1159                 );
1160
1161                 //get_work_area()->add_duck(bezier->c1);
1162                 get_work_area()->add_bezier(bezier);
1163         }
1164         if(bezier && !loop_)
1165         {
1166                 duck=new WorkArea::Duck(bline_point.get_vertex());
1167                 duck->set_ignore(true);
1168                 duck->set_name("temp");
1169
1170                 // Add the tangent1 duck
1171                 tduck=new WorkArea::Duck(Vector(0,0));
1172                 tduck->set_ignore(true);
1173                 tduck->set_name("ttemp");
1174                 tduck->set_origin(duck);
1175                 tduck->set_scalar(-0.33333333333333333);
1176
1177                 tduck->set_tangent(true);
1178                 bezier->p2=duck;
1179                 bezier->c2=tduck;
1180
1181                 get_work_area()->add_duck(bezier->p2);
1182                 //get_work_area()->add_duck(bezier->c2);
1183                 get_work_area()->add_bezier(bezier);
1184
1185                 duck->set_guid(synfig::GUID());
1186                 tduck->set_guid(synfig::GUID());
1187
1188                 next_duck=duck;
1189         }
1190
1191         if(!button_down)
1192         {
1193                 if(curr_duck)
1194                 {
1195                         if(next_duck)
1196                         {
1197                                 curr_duck=next_duck;
1198                                 next_duck=0;
1199                         }
1200                 }
1201         }
1202         get_work_area()->queue_draw();
1203 }
1204
1205
1206 bool
1207 StateBLine_Context::on_vertex_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1208 {
1209         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1210         bline_point.set_vertex(point);
1211         value_node->set_value(bline_point);
1212         //refresh_ducks();
1213         return true;
1214 }
1215
1216 bool
1217 StateBLine_Context::on_tangent1_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1218 {
1219         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1220         bline_point.set_tangent1(point);
1221         value_node->set_value(bline_point);
1222         //refresh_ducks();
1223         return true;
1224 }
1225
1226 bool
1227 StateBLine_Context::on_tangent2_change(const synfig::Point &point, synfig::ValueNode_Const::Handle value_node)
1228 {
1229         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1230         bline_point.set_tangent2(point);
1231         value_node->set_value(bline_point);
1232         //refresh_ducks();
1233         return true;
1234 }
1235
1236 void
1237 StateBLine_Context::loop_bline()
1238 {
1239         loop_=true;
1240
1241         refresh_ducks(false);
1242 }
1243
1244 void
1245 StateBLine_Context::unloop_bline()
1246 {
1247         loop_=false;
1248
1249         refresh_ducks(false);
1250 }
1251
1252 void
1253 StateBLine_Context::popup_vertex_menu(synfig::ValueNode_Const::Handle value_node)
1254 {
1255         menu.items().clear();
1256
1257         if(loop_)
1258         {
1259                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Unloop BLine"),
1260                                 sigc::mem_fun(*this,&studio::StateBLine_Context::unloop_bline)
1261                 ));
1262         } else {
1263                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Loop BLine"),
1264                                 sigc::mem_fun(*this,&studio::StateBLine_Context::loop_bline)
1265                 ));
1266         }
1267
1268         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Delete Vertex"),
1269                 sigc::bind(
1270                         sigc::mem_fun(*this,&studio::StateBLine_Context::bline_delete_vertex),
1271                         value_node
1272                 )
1273         ));
1274
1275         menu.popup(0,0);
1276 }
1277
1278 void
1279 StateBLine_Context::popup_bezier_menu(float location, synfig::ValueNode_Const::Handle value_node)
1280 {
1281         menu.items().clear();
1282
1283         menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Insert Vertex"),
1284                 sigc::bind(
1285                         sigc::bind(
1286                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_insert_vertex),
1287                                 location
1288                         ),
1289                         value_node
1290                 )
1291         ));
1292
1293         menu.popup(0,0);
1294 }
1295
1296 void
1297 StateBLine_Context::bline_insert_vertex(synfig::ValueNode_Const::Handle value_node, float origin)
1298 {
1299         list<ValueNode_Const::Handle>::iterator iter;
1300
1301         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1302                 if(*iter==value_node)
1303                 {
1304                         BLinePoint bline_point;
1305                         BLinePoint next_bline_point((*iter)->get_value().get(BLinePoint()));
1306                         BLinePoint prev_bline_point;
1307
1308                         list<ValueNode_Const::Handle>::iterator prev(iter);
1309                         if(iter==bline_point_list.begin())
1310                         {
1311                                 assert(loop_);
1312                                 prev = bline_point_list.end();
1313                         }
1314                         prev--;
1315
1316                         prev_bline_point=(*prev)->get_value().get(BLinePoint());
1317
1318                         etl::hermite<Vector> curve(prev_bline_point.get_vertex(),
1319                                                                            next_bline_point.get_vertex(),
1320                                                                            prev_bline_point.get_tangent2(),
1321                                                                            next_bline_point.get_tangent1());
1322                         etl::derivative< etl::hermite<Vector> > deriv(curve);
1323
1324                         bline_point.set_vertex(curve(origin));
1325                         bline_point.set_width((next_bline_point.get_width()-prev_bline_point.get_width())*origin+prev_bline_point.get_width());
1326                         bline_point.set_tangent1(deriv(origin)*std::min(1.0f-origin,origin));
1327                         bline_point.set_tangent2(bline_point.get_tangent1());
1328                         bline_point.set_split_tangent_flag(false);
1329                         bline_point.set_origin(origin);
1330
1331 /*
1332                         bline_point.set_vertex((next_bline_point.get_vertex()+prev_bline_point.get_vertex())*0.5);
1333                         bline_point.set_width((next_bline_point.get_width()+prev_bline_point.get_width())*0.5);
1334                         bline_point.set_origin(origin);
1335                         bline_point.set_split_tangent_flag(false);
1336                         bline_point.set_tangent1((next_bline_point.get_vertex()-prev_bline_point.get_vertex())*0.5);
1337 */
1338
1339                         bline_point_list.insert(iter,ValueNode_Const::create(bline_point));
1340                         break;
1341                 }
1342
1343         if(iter==bline_point_list.end())
1344         {
1345                 get_canvas_view()->get_ui_interface()->error(_("Unable to find where to insert vertex, internal error, please report this bug"));
1346         }
1347
1348         refresh_ducks(false);
1349 }
1350
1351 void
1352 StateBLine_Context::bline_delete_vertex(synfig::ValueNode_Const::Handle value_node)
1353 {
1354         list<ValueNode_Const::Handle>::iterator iter;
1355
1356         for(iter=bline_point_list.begin();iter!=bline_point_list.end();++iter)
1357                 if(*iter==value_node)
1358                 {
1359                         bline_point_list.erase(iter);
1360                         break;
1361                 }
1362         if(iter==bline_point_list.end())
1363         {
1364                 get_canvas_view()->get_ui_interface()->error(_("Unable to remove vertex, internal error, please report this bug"));
1365         }
1366
1367         refresh_ducks(false);
1368 }
1369
1370 void
1371 StateBLine_Context::popup_handle_menu(synfig::ValueNode_Const::Handle value_node)
1372 {
1373         menu.items().clear();
1374
1375         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1376
1377         if(bline_point.get_split_tangent_flag())
1378                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Merge Tangents"),
1379                         sigc::bind(
1380                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_attach_handle),
1381                                 value_node
1382                         )
1383                 ));
1384         else
1385                 menu.items().push_back(Gtk::Menu_Helpers::MenuElem(_("Split Tangents"),
1386                         sigc::bind(
1387                                 sigc::mem_fun(*this,&studio::StateBLine_Context::bline_detach_handle),
1388                                 value_node
1389                         )
1390                 ));
1391
1392         menu.popup(0,0);
1393 }
1394
1395 void
1396 StateBLine_Context::bline_detach_handle(synfig::ValueNode_Const::Handle value_node)
1397 {
1398         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1399         bline_point.set_split_tangent_flag(true);
1400         bline_point.set_tangent2(bline_point.get_tangent1());
1401         value_node->set_value(bline_point);
1402         refresh_ducks(false);
1403 }
1404
1405 void
1406 StateBLine_Context::bline_attach_handle(synfig::ValueNode_Const::Handle value_node)
1407 {
1408         BLinePoint bline_point(value_node->get_value().get(BLinePoint()));
1409         bline_point.set_tangent1((bline_point.get_tangent1()+bline_point.get_tangent2())*0.5);
1410         bline_point.set_split_tangent_flag(false);
1411         value_node->set_value(bline_point);
1412         refresh_ducks(false);
1413 }